Section 9 Timers
2. Block Diagram
Figure 9.3 shows a block diagram of timer F.
φ
φ
/4
w
TMIF
Toggle
TMOFL
circuit
Toggle
TMOFH
circuit
Legend:
TCRF:
Timer control register F
TCSRF:
Timer control/status register F
TCFH:
8-bit timer counter FH
TCFL:
8-bit timer counter FL
OCRFH:
Output compare register FH
OCRFL:
Output compare register FL
IRRTFH:
Timer FH interrupt request flag
IRRTFL:
Timer FL interrupt request flag
PSS:
Prescaler S
Rev. 6.00 Aug 04, 2006 page 276 of 680
REJ09B0145-0600
PSS
Figure 9.3 Block Diagram of Timer F
TCRF
TCFL
Comparator
OCRFL
TCFH
Comparator
OCRFH
TCSRF
IRRTFL
Match
IRRTFH